Vehicle-mounted hydrogen supply method and device for hydrogen-rich smelting in blast furnace or shaft furnace

Patent metadata

Field	Value
Publication number	US-12516780-B2
Application number	US-202218681984-A
Country	US
Kind code	B2
Filing date	Apr 12, 2022
Priority date	Aug 12, 2021
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

A vehicle-mounted hydrogen supply method and device for hydrogen-rich smelting in a blast furnace or shaft furnace, combining steel plant hydrogen supply requirements with vehicle-mounted hydrogen supply technologies to construct a vehicle-mounted hydrogen supply system applied to hydrogen-rich smelting in a blast furnace or shaft furnace, thus providing an effective and reliable pathway for safe and stable hydrogen supply in a blast furnace or shaft furnace smelting process to perform hydrogen-rich smelting testing and production. Compared with a newly-built hydrogen plant, the invested construction cost is low, the operation flow is simple, the method and device are not limited by technical upgrading and transformation, and the flexibility is high. At the same time, two working long pipe vehicles and two pressure reducing system intake pipelines are used for solving the problem of continuous hydrogen supply required for hydrogen-rich smelting in a blast furnace.

First claim

What is claimed is:

1 . A vehicle-mounted hydrogen supply method for hydrogen-rich smelting in a blast furnace or shaft furnace, comprising the following steps:
S 1 : establishing a plurality of designated working parking spaces at designated positions in or near a steel smelting plant; S 2 : computing the number N1 of hydrogen transport apparatuses in transit and the number N2 of hydrogen transport apparatuses that can supply hydrogen in dedicated parking spaces according to a distance between a hydrogen supply station and the designated working parking spaces and daily hydrogen demand of the steel smelting plant, wherein N≥3; S 3 : dividing the hydrogen transport apparatuses that can supply hydrogen in the designated working parking spaces into working long pipe vehicles and standby long pipe vehicles, wherein at least two working long pipe vehicles are provided, including a first working long pipe vehicle and a second working long pipe vehicle, and at least one standby long pipe vehicle is provided; dividing hydrogen long pipe vehicles in transit into fully-loaded long pipe vehicles and no-load long pipe vehicles according to the hydrogen content therein; and S 4 : respectively connecting the two working long pipe vehicles to a pressure reducing system; reducing the pressure of high pressure hydrogen in the first working long pipe vehicle by the pressure reducing system, and then, injecting the high pressure hydrogen with the pressure reduced into an injection system, in a case that a hydrogen pressure value in the first working long pipe vehicle is lower than a set pressure supply value, opening an intake pipeline of the second working long pipe vehicle, and cutting off an intake pipeline of the first working long pipe vehicle; at the same time, connecting the intake pipeline that was cut off to the standby long pipe vehicle to become a new working long pipe vehicle; at this time, marking the first working long pipe vehicle whose hydrogen supply is cut off as a no-load long pipe vehicle, and immediately driving the first working long pipe vehicle out of the steel smelting plant towards the hydrogen supply station for adding hydrogen; before a hydrogen pressure value in the second working long pipe vehicle is lower than the set pressure supply value, enabling at least one fully-loaded long pipe vehicle in transit to enter the steel smelting plant and stop in any one of the designated working parking spaces to become a standby long pipe vehicle; and achieving vehicle-mounted cyclic hydrogen supply.

2 . The vehicle-mounted hydrogen supply method for hydrogen-rich smelting in a blast furnace or shaft furnace according to claim 1 , wherein at least three designated dedicated parking spaces are arranged in the steel smelting plant for parking two working long pipe vehicles and one standby long pipe vehicle; and at least two intake pipelines connected to the pressure reducing system are provided, and at least one of the at least two intake pipelines is connected to a hydrogen outlet of at least one of the two working long pipe vehicles through an intake hose provided with a stop valve.

3 . The vehicle-mounted hydrogen supply method for hydrogen-rich smelting in a blast furnace or shaft furnace according to claim 1 , wherein the pressure reducing system comprises two stop valve pressure reducers connected to two intake pipelines respectively, and the stop valve pressure reducers are alternately used to achieve continuous pressure reduction supply of hydrogen.

4 . The vehicle-mounted hydrogen supply method for hydrogen-rich smelting in a blast furnace or shaft furnace according to claim 1 , wherein the set pressure supply value is 15 bar.

5 . A vehicle-mounted hydrogen supply device for hydrogen-rich smelting in a blast furnace or shaft furnace, comprising:
hydrogen transport apparatuses, configured to transport hydrogen from a hydrogen supply station to a steel smelting plant, and at least comprising a first working long pipe vehicle, a second working long pipe vehicle and a standby long pipe vehicle, wherein the first working long pipe vehicle, the second working long pipe vehicle and the standby long pipe vehicle can supply hydrogen and are all located in designated working parking spaces of the steel smelting plant; a pressure reducing system, comprising an intake pipeline, a pressure reducing pipeline and an output pipeline connected in sequence, wherein the output pipeline comprises an output main pipe; the intake pipeline at least comprises a first intake branch and a second intake branch; input ends of the first intake branch and the second intake branch are respectively connected to the first working long pipe vehicle and the second working long pipe vehicle, and the first intake branch and the second intake branch are both provided with a manual butterfly valve and a first stop valve; the pressure reducing pipeline at least comprises a first pressure reducing branch and a second pressure reducing branch; input ends of the first pressure reducing branch and the second pressure reducing branch communicate with each other and are connected to output ends of the first intake branch and the second intake branch, and output ends of the first pressure reducing branch and the second pressure reducing branch communicate with each other and are connected to an input end of the output main pipe of the output pipeline; the output main pipe is provided with a first check valve and a rapid cut-off valve in sequence, the input end of the output main pipe is connected to the output ends of the first pressure reducing branch and the second pressure reducing branch, and an output end of the output main pipe is connected to an injection system; the injection system, comprising an annular main pipe connected to the output end of the output main pipe, wherein an output end of the annular main pipe is provided with a plurality of injection branch pipes, and each injection branch pipe is connected to a tuyere of the blast furnace through a metal hose and a fire arrestor; and a control system, comprising a transport computing module and a pressure reducing control module, wherein:
the transport computing module computes the number of long pipe vehicles in transit according to an inputted distance between the hydrogen supply station and the steel smelting plant and daily hydrogen demand of the steel smelting plant; and
the pressure reducing control module cyclically opens the first pressure reducing branch and the second pressure reducing branch according to a pressure value of the intake pipeline.

6 . The vehicle-mounted hydrogen supply device for hydrogen-rich smelting in a blast furnace or shaft furnace according to claim 5 , wherein the pressure reducing system further comprises a nitrogen protection pipeline, and the nitrogen protection pipeline comprises a nitrogen input branch and a nitrogen output branch; the nitrogen input branch is provided with a first pressure regulating apparatus, a second check valve, a second stop valve and a first cold angle valve in sequence, an input end of the nitrogen input branch is connected to a nitrogen supply apparatus, and an output end of the nitrogen input branch is connected to an output end of the first intake branch; and the nitrogen output branch is provided with a second cold angle valve, a concentric reducer and a bleeding valve in sequence, and an input end of the nitrogen output branch is connected to the input end of the first pressure reducing branch.

7 . The vehicle-mounted hydrogen supply device for hydrogen-rich smelting in a blast furnace or shaft furnace according to claim 6 , wherein the pressure reducing pipeline further comprises at least one standby pressure reducing branch connected in parallel at both ends of the first press

Assignees

• Changli Xingguo Prec Parts Co Ltd
• Univ Shanghai
• Shanghai Unviersity

Inventors

• Zhou Guocheng
• Zhu Kai
• Liu Quanli
• Zhang Yuwen
• Lu Xionggang
• Yang Yuwen

Classifications

• Y10T137/877

  With flow control means for branched passages · CPC title

• F17D5/005

  of gas pipelines, e.g. alarm · CPC title

• F17D1/075

  by mere expansion from an initial pressure level, e.g. by arrangement of a flow-control valve · CPC title

• F27D19/00

  Arrangements of controlling devices · CPC title

• F27D7/06

  Forming or maintaining special atmospheres or vacuum within heating chambers (supplying steam, vapour, gases or liquids F27D7/02) · CPC title